Currently, if you set up a remote as7 and use the defaults, it won't work.
You either need to check "Expose your management port" in the server editor (and set up a user in your remote as7 installation).
Or you need to change the Startup poller to Web poller (instead of JBoss 7 Manager Service which doesn't make sense unless you expose the management port).

It would be desirable to make this work OOTB - e.g. by default use the web poller - this would be the easiest solution that wouldn't require any extra logic, but also it wouldn't encourage users to use the management api.

Please, evaluate this and move to a future version if needed.